A1 series memory card, new form, APP running more smoothly. Shoot, save, and share more than ever before. Capture life at its fullest with the breakthrough capacity of this A1 microSD card. Rated A1 for faster app performance to launch and load apps faster than ever before. Built to perform in harsh conditions, SanDisk Ultra microSDHC UHS-I cards are waterproof, temperature-proof, shockproof, and X-ray-proof. The A1 microSD card is rated Class 10 for Full HD video recording performance and has a 10-year limited warranty. Durable Design for Use in Harsh Environments: SanDisk Ultra microSD UHS-I Cards are shockproof, temperature-proof, waterproof, and X-ray-proof so you can enjoy your adventures without worrying about the durability of your memory card.Premium Transfer Speeds of up to 98MB/s.Your content moves amazingly fast. Now you can transfer up to 1200 photos in just one minute.